A few things that have recently come across my radar:
John 6 For Roman Catholics, James White. Dr. White walks through John 6 slowly, demonstrating Rome’s over reading of the text.
Why I’m not Catholic, Steve Hays: A concise summation of some of the problems one ought to have with Roman Catholicism.
Debates with Roman Catholics, James White: Speaking of James White, he has spent a great deal of time debating and interacting with Roman Catholic apologists. For a taste, check out his debate page. Keep your eye out for White’s next debate on “Can Christians Lose Their Salvation?” with RC apologist Trent Horn. That is scheduled for tomorrow.